社会学家认为,人有四种年龄,一是出生年龄,从出生日算起,过一年,增一岁。二是生理年龄,看健康的状况。同是六十岁,有的身强体健,有的弱不禁风。三是心理年龄,看精神状态。有80岁的青年,也有18岁的老人。四是社会年龄,看一生奉献。对社会奉献越大越多,社会年龄就越长。一个人的生命走到了终点,出生年龄、生 Sociologists believe that people have four ages, one is the age of birth, from the date of birth, a year, by the age of one. Second, the physiological age, to see the health status. The same is sixty years old, some good health, and some fragile. Third, the psychological age, to see the mental state. There are 80-year-olds and 18-year-olds. Fourth, social age, see a lifetime devotion. The greater the dedication to society, the longer the social age. A person’s life reached the end, the age of birth, students